Abstract:
The invention relates to an electrical device comprising a stack of electrical elements, wherein: a central axis is defined in the stack; each element comprises an electrically insulating carrier; the carrier carries an electrically conductive loop-shaped track; both end zones of the track are located in the edge zone of the carrier; the loop-shaped tracks each form a turn and are arranged around the central axis in the stack; the end zones are connected to each other in electrically conductive manner such that the turns form one winding in at least groupwise manner; the carriers are congruent and each have a form such that they can be rotated from a starting position through an angle a around the central axis to a rotated position in which they take up the same space as in the starting position; adjacent elements with tracks which together form a winding are disposed rotated through an angle α relative to each other, and the mutually registered end zones are mutually connected by an electrical conductor extending transversely of the elements; the free end zones of the tracks of the outermost elements of the stack of elements form the externally accessible terminals of the or each winding; the elements are connected non-releasably to each other, and the stack has a peripheral surface with a form which is prismatic at least in its central zone, i.e. has the same cross-sectional form at any axial position.
Abstract:
The packaged device of the invention combines common mode filtering and ESD protection and is tuned to give optimum common mode protection at RF frequencies in use for mobile telephony, particularly, the lower frequency band of GSM. The package comprises a common mode choke followed by an ESD bridge including diodes.
Abstract:
Eine Datenträger-/Sendevorrichtung, umfasst einen Schwingkreis (12) mit mindestens einer Spule (14, 98) mit einer Mehrzahl von Windungen (20, 96), eine Träger (22, 76) für die Spule mit einem Trägerkörper (24, 78), und eine elektrische Schaltungsanordnung (18), an welche die Spule (14, 98) gekoppelt ist, wobei die Windungen der Spule jeweils einen ersten Bereich (28, 90) aufweisen, welcher an dem Trägerkörper liegend gebildet ist, und einen zweite Bereich (30, 92) aufweisen, welcher über den Trägerkörper hinausragend zu diesem beabstandet ist.
Abstract:
An Isolating Transmission Line Transformer (ITLT) for use in a data communications system is provided, the transformer comprising: a substantially planar substrate formed of electrically insulative material having opposed first and second surfaces; a first port formed of two separate terminals provided at one part of the substrate; a second port formed of two separate terminals provided at a second part of the substrate; a first conductor connected in series to the first port and arranged as a single loop; a second conductor which is electrically isolated from the first conductor and connected in series to the second port, the second conductor being arranged as a single loop in a substantially opposite orientation to the first conductor; wherein the first and second ports and at least part of the first and second conductors are provided on the substrate surface (s); and a core arranged between the first and second ports to cover the majority of the first and second conductors.
Abstract:
Embodiments of the invention include a microelectronic device and methods of forming a microelectronic device. In an embodiment the microelectronic device includes a semiconductor die and an inductor that is electrically coupled to the semiconductor die. The inductor may include one or more conductive coils that extend away from a surface of the semiconductor die. In an embodiment each conductive coils may include a plurality of traces. For example, a first trace and a third trace may be formed over a first dielectric layer and a second trace may be formed over a second dielectric layer and over a core. A first via through the second dielectric layer may couple the first trace to the second trace, and a second via through the second dielectric layer may couple the second trace to the third trace.
Abstract:
The invention relates to a method for manufacturing an electrical device comprising a stack of electrical elements, each with an electrically insulating carrier and an electrically conductive loop-shaped track with edge end zones; the end zones are connected conductively to each other; adjacent elements are disposed rotated relative to each other and their end zones are mutually connected by longitudinal conductors; which method comprises the following steps of: (a) providing the electrical elements, each comprising a carrier which can withstand a temperature T4, and the loop-shaped track, the material of which has a melting temperature Tl and which carrier can withstand a temperature T4; (b) providing the end zones with soldering material with a melting temperature T2; (c) stacking the elements such that adjacent elements are rotated through the angle a; (d) arranging a longitudinal recess in the outer surface at each angular position of the stack at the position of an end zone of a track of an element; (e) providing electrically conductive wires with a melting temperature T3; (f) providing the wires with soldering material; (g) positioning the wires in the recesses; (h) heating the stack to a temperature T5, wherein: T5 > T2 T5
Abstract:
A laser excitation pulsing system, which includes a pulse transformer (16) having a plurality of parallel connected primary windings (21, 41.1 - 41.12, 43.1 - 43.12) and a secondary winding (23.1) wound around a toroidal magnetic core (52) in a coaxial fashion in which at least part of the primary windings (41.1 - 41.12, 43.1 - 43.12) are in the form of tubular sections through which corresponding parts of the secondary winding (23.1) extend.